Which of the following associated with cancer development would you expect to be tumor promoters and not genotoxic carcinogens (select all that apply)? A. Excessive alcohol consumption that kills liver cells B. Bisphenol A which mimics the activity of estrogen C. Chemical in pesticides that binds and activates a transcription factor that cause activation of NFkB D. Chemical in cigarette smoke that forms adduct with DNA E. A viral infection that causes ulcerative coilitis of GI tract

Which of the following associated with cancer development would you expect to be tumor promoters and not genotoxic carcinogens (select all that apply)? A. Excessive alcohol consumption that kills liver cells B. Bisphenol A which mimics the activity of estrogen C. Chemical in pesticides that binds and activates a transcription factor that cause activation of NFkB D. Chemical in cigarette smoke that forms adduct with DNA E. A viral infection that causes ulcerative coilitis of GI tract

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter17: Developmental Genetics

Section: Chapter Questions

Problem 8TYU: Which of the following statements about cancer is false? (a) oncogenes arise from mutations in...

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Another model, the random model, proposes that any cell in a malignant tumor has the potential to form a new tumor. Does the cancer stem cell hypothesis contradict this idea?
Which of the following statements correctly describes a characteristic of tumor-suppressor gene? a) they are frequently overexpressed in cancerous cells. b) they are cancer-causing genes introduced into cells by viruses. c) they encode proteins that help prevent uncontrolled cell growth. d) they often encode proteins that stimulate the cell cycle.
Which of the following accurately compares tumor suppressor genes and proto-oncogenes? A. Both tumor suppressor and proto-oncogenes prevent the spread of cancer by targeting and destroying existing cancer cells. B. A person who has both tumor suppressor and proto-oncogenes will always develop cancer. C. Proto-oncogenes code for growth factors, while tumor suppressor genes inhibit cell division of damaged cells. D. When a proto-oncogene mutates, it becomes a tumor suppressor gene.
Which of the following is true of tumor suppressor genes? Group of answer choices a) If this gene is overactive, it becomes an oncogene b) If one of the alleles is mutated, there is usually little effect. Two inactivating mutations are usually required for loss of function (recessive mutation). c) If one copy is lost, the gene no longer functions (dominant mutation) d) Tumor suppressors genes usually cause mitosis or cell growth e) Tumor suppressor genes decrease apoptosis
Which of the following types of mutations would be advantageous to a cancer cell (select all that apply)? A. An inactivating mutation in a tumor suppressor gene B. Methylation of the promoter of a tumor suppressor gene C. An inactivating mutation in an oncogene D. Mutation that inactivated DNA repair gene E. An inactivating mutation in an oncogene
Characterize the differences between tumor cells and normal cells in terms of the following properties. In cancer cells, how might each of these properties contribute to tumor progression? a) contact inhibition b) autocrine stimulation c) apoptosis d) senescence due to telomere shortening e) genomic stability f) angiogenises g) metastasis
Which of the following mutations is MOST likely to cause cancer? A) a mutation that causes a cyclin gene to be expressed at all times during the cell cycle B) a mutation that causes an oncogene to be turned off so that no protein is made C) a mutation that causes a Cdk gene to be turned off so that no protein is made D) a mutation that causes a tumor suppressor gene to be over-expressed
Normal (nonmutant) tumor-suppressor genes often functiona. as negative regulators of cell division.b. in the maintenance of genome integrity.c. in the stimulation of cell division.d. as both a and b.
The p53 gene was discovered in 1979, but it was not clear whether the gene functioned as an oncogene or a tumor-suppressor gene. Several years later, researchers showed that both p53 alleles are inactivated in some mouse cancers. This evidence suggests A. the p53 gene is an oncogene because inactivated alleles would produce mutated signal transduction proteins that would result in stimulating cell division. B. the p53 gene is an oncogene because the cell would overproduce transcription factors to compensate for the inactive alleles, resulting in increased cell division. C. the p53 gene is a tumor-suppressor gene because inactivated alleles indicate a loss of protein function which allowed the cancer to develop D. the p53 gene is a tumor-suppressor gene because the cell would produce too few transcription factors for gene activation, resulting in decreased cell division.
Tumor-suppressor genes promote cancer whena. they are overexpressed.b. they are expressed in the wrong cell type.c. their function is inactivated.d. they are expressed at the wrong stage of development.
Which of the following effectively describes the situation of someone with an inherited predisposition to cancer such as familial adenomatous polyposis or BRCA-associated familial breast cancer? Choose all that apply a) If they get malignant cancer, somatic mutations will not have been a factor b) Their cancer will most likely arise in their germ cells, not their somatic cells c) None of the answers effectively describes the situation d) Every cell of their body contains a gain-of-function allele of an oncogene e) Most cells in their body contain multiple cancer-causing mutations f) Every cell of their body contains a defective, loss-of-function allele of a tumor suppressor gene
Which of the following best describes a gene that codes for a tumor-suppressor protein? a. One that helps to prevent progression through the cell cycle. b. One that helps prevent apoptosis. c. One that codes for a DNA repair enzyme. d. One that supports part of a growth factor signaling pathway.

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	A.	Excessive alcohol consumption that kills liver cells
	B.	Bisphenol A which mimics the activity of estrogen
	C.	Chemical in pesticides that binds and activates a transcription factor that cause activation of NFkB
	D.	Chemical in cigarette smoke that forms adduct with DNA
	E.	A viral infection that causes ulcerative coilitis of GI tract